Electronic musical instrument and automatic power-off method

An electronic musical instrument comprising:

• a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time;
• and
• a processor that is configured to determine whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode, and turn off the power supply on the condition that it is determined that the OFF condition is satisfied in the automatic power-OFF mode, wherein
• the processor is configured not to turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied.

An automatic power off method of an electronic musical instrument comprising:

• determining whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode;
• inputting an audio signal into the electronic musical instrument via a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time;
• and
• turning off the power supply on the condition that it is determined that the OFF condition is satisfied in the automatic power-OFF mode, wherein
• the turning off the power supply includes
• not turning off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied.